Unusually weak electron-phonon coupling in the Shockley surface state on Pd(111)

Sklyadneva IY, Heid R, Silkin VM, Melzer AC, Bohnen KP, Echenique PM, Fauster T, Chulkov EV (2009)

Publication Status: Published

Publication Type: Journal article

Publication year: 2009

Journal

Physical Review B American Physical Society

Publisher: American Physical Society

Book Volume: 80

Article Number: 045429

DOI: 10.1103/PhysRevB.80.045429

Abstract

Electron-phonon (e-ph) coupling in the (Gamma) over bar unoccupied surface state on Pd(111) is studied using density-functional perturbation-theory calculation and two-photon photoemission measurements. Also, an ab initio GW calculation is performed to combine it with the e-ph coupling evaluation in the study of the surface-state linewidth. We show that the e-ph coupling in the surface state is unusually weak. It is smaller by a factor of 5 than that at the Fermi surface of bulk Pd. Temperature-dependent two-photon photoemission measurements confirm this result indicating an important role of interband scattering from surface to bulk states.

Authors with CRIS profile

Thomas Fauster Lehrstuhl für Festkörperphysik

Involved external institutions

Donostia International Physics Center (DIPC) ES Spain (ES) Karlsruhe Institute of Technology (KIT) DE Germany (DE)

How to cite

APA:

Sklyadneva, I.Y., Heid, R., Silkin, V.M., Melzer, A.C., Bohnen, K.P., Echenique, P.M.,... Chulkov, E.V. (2009). Unusually weak electron-phonon coupling in the Shockley surface state on Pd(111). Physical Review B, 80. https://doi.org/10.1103/PhysRevB.80.045429

MLA:

Sklyadneva, I. Yu., et al. "Unusually weak electron-phonon coupling in the Shockley surface state on Pd(111)." Physical Review B 80 (2009).

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